Drive Train

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Valley Center Drive

Overview

Gain proven irrigation performance with the Valley center drive. It’s engineered to keep your center pivots and linears running for years to come. Adding to its strength and performance, our standard-speed center drive has the lowest power requirements in the irrigation industry, due to its efficient and durable helical gearbox, and its efficient, powerful motor.

Features

Added strength: Steel gears provide more strength than powdered metal
Longer motor life: Aluminum finned housing runs 20° F cooler and there’s no paint to chip, scratch or corrode
Less corrosion: Internally vented junction box prevents moisture and contaminants from corroding the wire connections
Extended performance: Crop guard protects shaft seals
Improved reliability: Integral pinion gear eliminates coupler to improve reliability
Quieter operation: Helical gears create more tooth contact than spur gears, delivering greater torque capacity and quieter operation
Greater torque capacity: Special motor windings mean 40% higher operating torque than the competition

Specifications


Extra-large intermediate gear bearings	Assure longer life.
25° tooth angles	Provide 40% greater load capacity and wear resistance than other manufacturers’ 14 1/2º tooth angles.
Built-in crop guard over U-joint	Prevents crop wrapping in or near oil seals.
Double reduction gearing	Requires fewer gears, shafts, and bearings for greater reliability and efficiency.
Stator	Can be replaced independent of rotor, and is held in place with corrosion-resistant, stainless steel bolts for easy maintenance.
Valley-exclusive coating	Applied to internal surfaces to prevent corrosion.
Watertight seal	Between housing components.
Finned aluminum housing	For cool-running efficiency. Operates at temperatures 20° F (11° C) lower than comparable motors with steel housing because the Valley aluminum housing and fins dissipate heat more effectively. This doubles insulation life and increases motor life.
Case-hardened steel helical gears	More teeth meshed at all times for smoother power transmission.
Drain plug	Easily accessible, extra large.

Product Manufacturer

Valley Gearbox

Overview

At Valley® Irrigation, our mission is to provide you with the most durable irrigation supplies in the industry. That’s why Valley is the only center pivot company that produces its own gearboxes. The industry-leading Valley gearbox is life-tested and quality checked throughout the process to ensure we are constructing the most reliable and structurally sound gearbox available.

Features

Superior design: Three times the life of competitive gearboxes, based on independent tests.
Greater torque capacity: Bull gear delivers 20% higher torque capacity, based on independent tests.
Built-to-last: Longer output shaft increases mud and crop clearance, reducing chance of seal damage.
Minimizes bearing loads: Special offset rims position tire close to the gearbox to minimize bearing loads for longer life.
Highest load rating: Input and output bearings are American made and case hardened, resulting in the industry’s highest load rating.
Handles extreme conditions: Gearbox housing made to handle high-stress areas and extreme operating conditions.
Additional load capabilities: Bronze bull gear option provides additional load capabilities with hardened steel worm for extreme operating conditions or extended life under less-severe conditions.

Specifications


Large-capacity rubber diaphragm	Expands with heat and pressure to minimize water condensation.
Input and output bearings	Case hardened to provide the highest quality and highest load rating available in the industry.
Worm gear	High-strength ductile iron provides significantly longer wear life than steel when combined with a cast iron bull gear.
Tooth design	Industry exclusive 25° tooth angle provides 40% longer life and better reliability in tough conditions compared to normal 14 1/2° tooth designs.
Largest bull gear neck and keyway	Provides strength in critical load-bearing area.
Expansion chamber	Cap made of corrosion-resistant cast aluminum; rubber diaphragm allows oil to expand and contract during operation. Vented cap prevents pressure buildup and prevents seals from leaking.
Threaded endcap	Allows accurate bearing preload to increase bearing life.
52:1 gear ratio	Fully recessed tooth design keeps oil between engaged gears.
Bull gear	High-strength cast iron provides the highest load capacity and longest life in the industry. Optional bronze gear is available for extreme conditions.
Multi-viscosity gearbox oil	Exceeds 85w140 GL5 oil for long gear wear under extreme load conditions.